Walvax Biotechnology Co., Ltd., engages in the research and development, manufacture, and distribution of vaccines in China. Its vaccine portfolio includes recombinant human papillomavirus bivalent, 13-valent pneumococcal polysaccharide conjugate, 23-valent pneumococcal polysaccharide, group ACYW135 meningococcal polysaccharide, group A and C meningococcal polysaccharide, group A and group C meningococcal conjugate, and haemophilus influenzae type b conjugate vaccines, as well as diphtheria, tetanus and acellular pertussis combined vaccine. The company was founded in 2001 and is headquartered in Kunming, China.